Crossed poles

Crossed poles. When the axis of a second polarizing filter is parallel to the first, a maximum amount of light passes through. When the axes of the filters are perpendicular (crossed poles), no light passes through. 

A variable-speed drive is usually used on the feed and cross-belt drives to exercise control in separator operation, although the speed is not usually changed once the optimum operating condition is estabUshed. Feed rates and the selection of the number of magnetic poles are usually deterrnined by preliminary laboratory tests. The mineral types involved in the feed largely determine the number of poles selected. High intensity cross-belt separators are frequendy used in combination with induced-roU or electrostatic separators. 

Cross-belt magnetic separators are based on the same principle as lifting magnets. Although these units have relatively low capacities, the same unit can produce selective separations with different products by using different pole gaps and field strengths. (See Fig. 19-42.)... 

Separations similar to those obtained with dry induced-roll devices can be obtained with cross-belt separators (Fig. 19-42). These units are built with up to eight poles, each of which can operate at different magnetic-field intensities to allow simultaneous production of different concentrates. However, capacity is low, and installed costs per ton capacity are high compared with induced-roll units. 

Figure 19.8 Cross-sectional view of a typical pole assembly of an 11 kV MOCB (Courtesy NGEF Ltd.)...

Vacuum is finally judged to be the best medium to quench the arc plasma and interrupt a circuit undci the most adverse conditions. Figure 19,24 gives cross-sectional views of one pole of a vacuum circuit breaker and a typiciil construction of the arcing contacts and Figure... 

The two estimates, if plotted, look as shown in Fig. 6.4. This explains why fibre-reinforced composites like wood and GFRP are so stiff along the reinforced direction (the upper line of the figure) and yet so floppy at right angles to the direction of reinforcement (the lower line), that is, it explains their anisotropy. Anisotropy is sometimes what you want - as in the shaft of a squash racquet or a vaulting pole. Sometimes it is not, and then the layers of fibres can be laminated in a criss-cross way, as they are in the body shell of a Formula 1 racing car. 

Here we shall describe how the periodic-orbit theory of section 3.4, relating the energy levels with the poles of the spectral function g E), can be extended to two dimensions. For simplicity we shall exemplify this extension by the simplest model in which the total PES is constructed of two paraboloids crossing at some dividing line. Each paraboloid is characterized by two eigenfrequen-cies, o + and [Pg.72]

The second compensating pole is just used to maintain high frequency stability by depressing the gain above the cross-over frequency. 

The remaining pole (/ep2) is placed higher than the gain cross-over frequency, so... 

The excess phase is the most important consideration of the three, since the gain cross-over frequency is usually much higher than the point of maximum phase lag caused by a filter pole. 

In the past, USA competing companies could not cooperate, such as in R D, without breaching antitrust laws. Patent pooling, such as collecting and cross-licensing patents, was precluded. Today the antitrust laws are reviewed, interpreted, and enforced less stringently, which permits industrial cooperation in selected and specific areas where poling does exist. This explanation is a simplistic summation to a very complicated situation. 

Figure 16. The integration contour from Eq. (40) is distorted as explained in text. The pole k = iei is shown by a cross. Note the contour does not cross the pole when being shifted off the real axis.

The biplot of Fig. 31.9 shows that both the centroids of the compounds and of the methods coincide with the origin (the small cross in the middle of the plot). The first two latent variables account for 83 and 14% of the inertia, respectively. Three percent of the inertia is carried by higher order latent variables. In this biplot we can only make interpretations of the bipolar axes directly in terms of the original data in X. Three prominent poles appear on this biplot DMSO, methylene-dichloride and ethylalcohol. They are called poles because they are at a large distance from the origin and from one another. They are also representative for the three clusters that have been identified already on the column-standardized biplot in Fig. 31.7. 

Draw a line from e through / and extend it to cross the line drawn in step 6, at the pole point, P. 

The differential cross section is then proportional to the spectroscopic factor (or pole strength) ... 

The most well-known and dramatic manifestation of an INR is the appearance of a narrow feature in the integral cross-section (ICS), cr(E) at total energy E = Er of width T. Obviously the resonance peak is closely related to the existence of the resonance pole in the S-matrix. Using the normal body-fixed representation for an A + BC v,j) — AB(v, j ) + C reaction, the ICS is related to the S-matrix by... 

---